Aparticular country has 50 total states. if the areas of all 50 states are added and the sum is divided by 50, the result is 196 comma 510 square kilometers. determine whether this result is a statistic or a parameter.

Is a parameter

Explanation:

A statistic is a value obtained from calculating the data from a sample, while a parameter is obtained from calculating the data of a population, in this case the average area of the states of a country was obtained, and for its calculation was used the data of all the states, that is, it was calculated with the population data and therefore the result obtained is a parameter.

the dissociation of nickel hydroxide is follows:

the concentration of hydroxide ion is

the equilibrium constant value of nickel hydroxide is = 6.1 * 10^-^1^6 and thus equilibrium equation can be written as:

thus, concentration of ni is 0.23 * 10^-^4 mol /l